hasproperty javascript code example
Example 1: javascript hasownproperty
var person = {
"first_name": "Bob",
"last_name": "Dylan"
};
person.hasOwnProperty('first_name');
person.hasOwnProperty('age');
Example 2: check the properties of an object in javascript
for (var name in object) {
if (object.hasOwnProperty(name)) {
}
}
const hero = {
name: 'Batman'
};
hero.hasOwnProperty('name');
hero.hasOwnProperty('realName');
Example 3: has own propriety javascrip
var x = {
y: 10
};
console.log(x.hasOwnProperty("y"));
console.log(x.hasOwnProperty("z"));
Example 4: javascript does object have property
var person = {'first_name': 'bill','age':20};
if ( person.hasOwnProperty('first_name') ) {
}
Example 5: has own propriety javascrip
if (someVar.hasOwnProperty('someProperty') ) {
} else {
}
Example 6: hasOwnProperty
The hasOwnProperty() method returns a boolean indicating whether the object has the specified property as its own property (as opposed to inheriting it).
const object1 = {};
object1.property1 = 42;
console.log(object1.hasOwnProperty('property1'));
console.log(object1.hasOwnProperty('toString'));